Kang Hye Na

Kang Hye Ha, the only successor of Kang-san Group, is the owner of the ‘Lady Castle’ and lives a ‘princess-like’ life with her servants. Hye-na’s parents died from a plane accident and her grandfather brought her up. Hye-na is strong-headed and selfish, whose world revolves around her because she could not experience the warmth of a family whilst growing up. One day, she comes across Dong-chan when she is carelessly driving and knocks into Dong-chan's truck in which he is shipping flowers. She knocks out a bunch of flowers from his truck so Dong-chan goes to complain. She refuses to apologize but just gives him money. She drives away although Dong-chan isn't satisfied. He chases after her and eventually cuts her of at the end of a road. Kang Hye-na ignores this and just drives straight into his truck. As a consequence of this he makes Hye-na do community service, kidnaps her, and appears in front of her as the new household manager. Hye-na makes every effort to throw him out from the Castle, but Dong-chan refuses to budge.

Source: Wikipedia